Improvement in spark-arresters



UNITED STATES PATENT OFFICE.

RAPHA WOODVVORTH, OF UNDERHILL, VERMONT.

IMPROVEMENT IN .SPARK-ARRESTERS.

Specification forming part of Letters Patent No. 43,653, dated July 2G, 1864.

Z' 0 all whom it 'may concern.-

Be it known that 1, RAPHA Woonwon'rrr, ot' Underhill, in the county ot' Chittenden and State of Vermont, have invented a new mode to kill and extinguish the sparks before they escape from a locomotive or stationary steamengine; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon.

The nature ot' my invent'on consists in providing the smoke-stack ot' a steam-engine with a steam chamber or compartment, from which steam is constantly passing, and al concavoconvex cap, which directs the sparks in such a manner as to bring them in contact with the steam from the steam-chamber, by which they are extin gnished while passing from the smokestack.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

l construct my smoke-stack of sheet-iron otl the proper thickness, and attach it to the engine in the ordinary manner. The smoke-pipe (marked A on the accompanying drawing) is made of the common size and height, being slightly enlarged at the top to allow the smoke and steam from the engine to spread as itstrikes the concave surface of the cap B. The space between the smoke pipe A and the external wall ofthe smoke-stack C, I divide by the partition D into two chambers or compa-rt ments. The inner chamber, E, is a reservoir,

into which the heavier sparks and cinders fall and burn to ashes. The outer chamber, F, is a steam chamberor reservoir, which is supplied with steam, either from the generation ot steam from water introduced into it or from the boiler of the engine by means of a steampipe for that purpose.

The cap B, as reen in the drawing, is made concavo convex and placed with its concave surface looking downward for the purpose of arresting the course ofthe smoke and cinders as they pass upward from the smoke-pipe A,

and turning them downward and outward across the mouth ot'the reservoir E, into which the heavier cinders fall, while the lighter ones -pass on, meeting the steam issuing` from the mouth ot' the steamchamber F, being extinguished as they pass out of the smoke-stack at the dratt marked G. The cap is held in L' place by means of bolts, which attach it to the external wall of the smoke-stack, passing through the draft or space marked Gr.

What l claim as my invent-ion, and desire to secure by LettersPatent, is-

The construction and application to steamengines ot a smokestack, consistin g ot' a smokepipe, reservoir for cinders, steamchamber, and cap, so arranged, as herein described, that the sparks are brought in contact with steam, by which they are extinguished before passing from the smoke-stack.

RAPHA WOODWO-RTH.

Witnesses:

MARTIN WIEN, J oHN BROWN. 

